Finding the Fourth Proportional to 131,778.63, 197,668.35 and 31,938.44
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Solution
The fourth proportional to 131,778.63, 197,668.35 and 31,938.44 is: 47,907.75
Step by Step Solution
- Step 1: Write the proportion equation
131,778.63 : 197,668.35 = 31,938.44 : x - Step 2: Convert to fraction form
131,778.63/197,668.35 = 31,938.44/x - Step 3: Cross multiply
131,778.63x = 197,668.35 × 31,938.44 - Step 4: Simplify right side
131,778.63x = 6,313,217,748.03 - Step 5: Solve for x
x = 6,313,217,748.03/131,778.63 - Step 6: Final answer
x = 47,907.75
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.